Engine-primer



D. V. SMITH.

ENGINE PRIMER. APPLICATION FILED JUNE I3. ISIS.

Patented Feb. 8,1921,

@EMM/"K sM/r/f W/T/VESSES UNITED STA'ES rarsar OFFICE.

DELBER'I V. SMITH, 0F HANSON, KENTUCKY.

ENGINE-PRIMER.

Application filed June 13, 1919.

To all w/Om 'it' may concern Be it known that l, Dnnnnirr V. SMrrH, a citizen of the United States, residing at Hanson, in the county of Hopkins and State of Kentucky, have invented certain new and useful Improvements in Engine-Primer of which the following is a specification.

This invention relates to primers for internal combustion engines.

The object of the invention is to provide simple and eihcient means for simultaneously priming all of the cylinders of an internal combustion engine and which is so oonstructed that back-firing cannot occur while the primers are open.

Another object is to provide improved means `for spraying the priming fiuid into the cylinders.

With the foregoing and other objects in View, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

in the accompanying drawings Figure 1 represents a side elevation partly in section of the device constituting this invention, and Y Fig. 2 is a detail sectional view. l

ln the embodiment illustrated, an engine head 1 is shown, having a plurality of upstanding pipes 2, one leading from each cylinder of the engine. These pipes 2 form priming' cups and are connected by and communicate with a horizontally disposed pipe 3. The upstanding pipes 2 have valves 4 mounted therein and which are here shown in the form of rotary valves. A valve actuating bar is arranged parallel with the pipe 3 in a plane above it, and connected with the valves 4 by links 6 pivoted to said bar 5. An arm 7 preferably made integral with bar 5 rises from said bar midway its ends and has pivotally connected with its free end an operating rod 8. This rod 8 extends through the dashboard D of the automobile in connection with which the device is used, and is provided with a handle 9 for operating it, and when shifted longitudinally opens or closes all of the valves 4 simultaneously.

A tank-10 for containing the priming fluid Specification of Letters Patent.

Patented Feb. 8, 1921. Serial No. 303,852. i

is mounted on the dashboard D and is provided in its upper end with a filling opening 11 closed by a threaded cap 11L having a pin hole aperture therein to prevent the formation of a vacuum in the tank. A bushing 12 is also threaded into the top of tank 10 and through which passes a pipe 13 which extends nearly to the bottom of tank 10. A valve casing 14 is carried by the lower end of pipe 13 and has a valve chamber 15 therein in which chamber is mounted a ball valve 16 designed to normally close the inlet 15 from the chamber as is shown clearly in Flo'. l.

valve stop 17 extends transversely through the casing 14 in the path of the valve 16 between pipe 13 and the inlet 15a. rlhis stop is designed to limit the opening movement of the Valve 16 and prevent its being drawn up against the end of pipe 13 which would cut off the passageof the fluid through said pipe.

A pipe 18 enters the inlet 15a, being here shown threaded therein and is provided at its outer end with a strainer 19 so that the priming fluid contained in tank 10 when drawn in through pipe 18 is strained before entering pipe 13.

A flexible pipe 20 connects the outer endof pipe 13 with a pipe 21 leading from a pump barrel 25. A valve 22 is mounted in pipe 21 for cutting off communication between the pump barrel and the pipe 20 and has a stem 23 projecting throughthe dashboard D and equipped at its outer end with a handle 24.

rlhe pump barrel 25 is horizontally disyposed with one end extending through the dash-board DV and provided with a removable closure 26 through which extends a plunger rod 27. This plunger rod 27 has a piston or plunger 28 on its inner end and a handle 29 on its outer end, and is designed to be actuated for drawing the priming fluid into the pump barrel on one stroke, and forcing it out on the other.

A valve chamber 30 is formed in the inner end of the pump barrel and has a ball valve 31 mounted therein and held against excessive opening movement by an adjustable stop 32 arranged in its path.

A pipe 33 connects the pipe 3 with the valve casing which carries the valve chamber 30 and has an enlarged internally threaded head 34 which engages a threaded nipple 35 formed on the valve casing.

A brace rod 36 connects the inner' end of the pump barrel with the dash-board and assists in supporting the barrel 25 in operative position.

In the use of this primer, when it is de- Nsired to prime the engine for starting or Y, that the valve 16 is opened by the suction so produced and that valve 22 be opened prior to the manipulation of the plunger. The handle 9 isthen grasped and the rod drawn out thereby shifting bar 5 and opening valves 4. The plunger is then moved in- 20 wardly which forces out the priming fluid from pump barrel 25 into the valve chamber 30 from where it passes through pipe 33, enters pipe 3 and is sprayed into the engine cylinders through pipes 2. The bores in pipes 2 being smaller than pipe 3, causes the spraying of the iiuid into the engine cylinders.

The valve 22 located in pipe 21 is designed for cutting off communication between the tank 10 and the pump barrel so that meddlesome persons operating the pump plunger could not effectpriming of the engine unless said valve were open. It desired, means could be provided for locking this valve Y closed when the driver was away from his machine.

From the foregoing description it will be obvious that this improved primer is very simple in construction and may be readily applied to any engine.v

From the foregoing description, taken in connection with the accompanying drawl ings, the advanta es of the construction and of the method o operation will be readily apparent to those skilled in the art to which the invention appertains and While I have described the principle of operation of the invention together with the device which I now consider to 'be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are within the scope of the claimed invention.

Having thus 'fully described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In an engine primer, a priming fluid container, a pipe extending into said container, a valve casing carried by the inner end of said pipe and having an outlet and an inlet, the latter being normally closed by an inwardly opening valve, a stop to prevent said valve from closing the outlet of said casing, a pump having a plunger and a barrel with which said pipe communicates in advance of its plunger, a priming cup having a valve controlled outlet, a pipe connecting said cup and pump barrel, an outwardly opening valve arranged at the junction of said pipe and barrel, and means `operable at a point remote for actuating said priming cup valve.

2. In an engine primer1 a priming Huid container, a pipe extending into said container, a valve casing carried by the inner end of said pipe and having an inlet normally closed by an inwardly opening valve, a pump having a plunger and a barrel with which said pipe communicates in advance of its plunger, a priming cup having a valve controlled outlet, a pipe connecting said cup and pump barrel, an outwardly opening valve arranged at the junction of said pipe and barrel, a reciprocatory member, a link pivoted to saidrmember and engagedwith said priming cup valve and an actuating rod connected with said reciprocating member.

In testimony whereoi` I aiiix my signature in presence of two witnesses.

DELBERT V. SMITH. 

